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Runphony
Every run hides a song. Runphony composes it.
Runphony reads a run or walk you already recorded and composes an original instrumental track from it. Your cadence sets the tempo, the phases of the run become the song's sections, your route shapes its structure. On-device, no ads, nothing to track.
Top comment
Hi Product Hunt, I kept finishing runs, looking at a chart of my pace, and thinking that a run has an obvious shape to it — a warm-up, a build, a hard middle, a sprint, a cool-down — and that's the shape a piece of music has too. So I built the thing that maps one onto the other. Runphony takes a workout you have already recorded — Health Connect, Apple Health, or a GPX/TCX file exported from Strava, Garmin, anything — and composes an original instrumental track from it. Nothing to record, no live tracking, no accelerometer running in your pocket. What actually drives the music: • Cadence sets the tempo. 170 steps per minute becomes 170 BPM, so your own footfalls land on the beat. • The phases of the run become the sections of the song. Warm-up, steady, push, sprint and cool-down each get a distinct musical role, so the track has a beginning, a build, a peak and a resolution instead of one flat loop. • Effort controls the arrangement — more layers where you worked hardest, sparser where you eased off. • Heart rate, when you have it, shapes the key and the mood. It deliberately does not touch tempo: heart rate lags effort, it keeps climbing after a sprint has ended. • The shape of your route shapes the song's structure. A loop comes home to where it started; an out-and-back mirrors itself on the way back. Two things I want to be upfront about, because they're the questions I'd ask: It is not a generative AI model. There is no cloud call, no prompt, no credits. It is a composition engine and a SoundFont sampler running entirely on your phone, and it is fully deterministic — the same run always produces the same track, so a run you liked is never lost. That constraint is the whole reason it stays tied to your effort instead of to a genre prompt. And the output is instrumental. No vocals, no lyrics. If you're arriving expecting something Suno-shaped, this is a different thing. You can export the finished track as a short video built from your own run — your route, your phase timeline, your stats — animated in one of six visual styles (cassette tape, retro handheld console, comic panel, cosmic orrery, scrapbook, neon pulse). That part exists because a song you can't show anyone is a song you forget about. Free gives you a preview of every track, one music style, and watermarked video export. Premium unlocks full-length tracks, all nine music styles, all export styles without the watermark, themes, unlimited history and cloud backup. Health data is read-only, never written, never sold, and there are no ads, no analytics and no tracking of any kind. Heart rate and route access are both optional — it works without either. Happy to answer anything, especially about the mapping. That's the part I spent the most time on and the part I'd most like to argue about.
About Runphony on Product Hunt
“Every run hides a song. Runphony composes it.”
Runphony was submitted on Product Hunt and earned 0 upvotes and 1 comments, placing #141 on the daily leaderboard. Runphony reads a run or walk you already recorded and composes an original instrumental track from it. Your cadence sets the tempo, the phases of the run become the song's sections, your route shapes its structure. On-device, no ads, nothing to track.
On the analytics side, Runphony competes within Android, Music and Running — topics that collectively have 111.7k followers on Product Hunt. The dashboard above tracks how Runphony performed against the three products that launched closest to it on the same day.
Who hunted Runphony?
Runphony was hunted by Aqsin Sulxayev. A “hunter” on Product Hunt is the community member who submits a product to the platform — uploading the images, the link, and tagging the makers behind it. Hunters typically write the first comment explaining why a product is worth attention, and their followers are notified the moment they post. Around 79% of featured launches on Product Hunt are self-hunted by their makers, but a well-known hunter still acts as a signal of quality to the rest of the community. See the full all-time top hunters leaderboard to discover who is shaping the Product Hunt ecosystem.
For a complete overview of Runphony including community comment highlights and product details, visit the product overview.